Kitty door knocker
OwnerMichael David Langstrothinventor
Life of this patent
Estimating the term…
Abstract
A door knocker for use by a cat for requesting entry into a house. This knocker comprises a mounting block attached to a door surface; a longitudinal spring having a first end mounted to the mounting block and a second end extending vertically downward from the first end. A hardwood ball is mounted to the second end. The ball is held at a knocking distance from the door surface. A string with loose frayed ends is attached to the second end of the spring near the ball. A cat coming near the door knocker is attracted to the string with frayed ends and instinctively starts to play with the string to operate the door knocker into a series of repetitive door knocks. The door knocker according to the present invention does not require any significant physical or mental effort from a cat.
Claims20
In combination, a door and a door knocker mounted to said door for use by a cat for requesting entry through a doorway of said door;
- said door knocker comprising:
- a mounting block attached to a surface of a lower portion of said door;
- a longitudinal spring having a first end mounted to said mounting block and a second end extending vertically downward from said mounting block;
- said spring extending parallel to said door surface at a distance from said door surface;
- said spring having an amplitude extending toward and away from said door surface;
- a hard ball mounted directly to said second end of said spring;
- said hard ball being held at a knocking distance from said door surface;
- and
- a string attached to said second end of said spring near said hard ball, said string having loose frayed ends extending away from said hard ball;
- said hard ball and said spring being configured for bouncing said hard ball against said door surface and for generating a series of repeat door knocks when a cat plays with said string and moves said ball and said spring.
In combination, a door and a door knocker mounted to said door for use by a cat for requesting entry through a doorway of said door;
- said door knocker comprising:
- a mounting block having a plane that is attached to a door surface on a lower portion of said door;
- a longitudinal spring having a first end mounted to said mounting block and a second end extending vertically downward from the first end and said mounting block, said spring extending parallel with said door surface, at a distance from said door surface;
- said spring having an amplitude extending toward and away from said door surface;
- a hardwood ball mounted directly to said second end of said spring;
- said ball being held at a knocking distance from said plane;
- and
- a string attached to said second end of said spring near said ball, said string having loose frayed ends extending away from said hardwood ball
- said hardwood ball and said spring being configured for bouncing said ball against said door surface and for generating a series of repeat door knocks when a cat plays with said string and moves said ball and said spring.
In combination, a door and a door knocker mounted to said door for use by a cat for requesting entry through a doorway of said door;
- comprising:
- a U-shaped door bracket mounted to an edge of said door;
- a mounting block mounted to said door bracket;
- a longitudinal spring having a first end mounted to said mounting block and a second end extending vertically downward from the mounting block, said spring extending parallel to said door surface, said spring having an amplitude extending toward and away from said door surface;
- a hardwood ball mounted directly to said second end of said spring;
- and
- a string attached to said second end of said spring near said ball, said string having loose frayed ends extending away from said ball.
Dependencies are inferred from the claim text.